to be honest… I’m not sure. I bought one of these for my wife last time they hade them for sale, we plugged it in a played with it a bit. It was pretty easy to make a graphic of my hand signature (for signing documents and stuff). She was pleased with it, but hasn’t really used it all that much. My PS skills are pretty sad, so I don’t use the tablet (yet) for my photo chops. I’d have to second Josephus and say that McGuffy is the guy to ask about using tablets in PS.
I really ought to pull it back out and play around some more this week. Maybe the contest theme will have some good opportunities - say making zombies a 'la McGuffy’s method from the contest 42 results thread.
Either way, I’d still say that this deal is a lot like most woot specials… at the given price, it’s worth the gamble. Even if you buy one and don’t like it, you could probably make your money back (or more) on ebay, especially given the large size of the tablet.